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J. 'A. CAMERON.

v MOVING PICTURE MACHINE. APPLICATION FILED JAN-3,1916, RENEWED Nov. 9.!918.

Patented June 24, 1919.

5 nvewlfoz UNITED STATES PATENT OFFICE.

JAMES A. CAMERON, DIE BROOKLYN, NEW YORK.

.MOVING-PICTURE MACHINE.

Specification of Letters Patent. Patented J une 24 1919,

Application filed January}, 1916, Serial No. 69,731. Renewed November 9, 1918. Serial No. 261,984.

7 '0 all whom. it may concern:

Be it known that 1", JAMES A. CAMERON, a citizen of the United States, and a resident of the borough of Brooklyn, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Moving-Picture Machines, of which the following is a specification.

The present invention relates generally to moving picture machines, and has more particularly reference to fire prevention ap pliances connected therewith.

The main object of the invention is to prevent the lantern from heating up the machine unduly, a condition which will arise in spite of the present day fire shield and automatically operated fire shutter.

I have found that by the provision of an air space or ventilating space between the casing and the fire shield and by the interposition of a radiating shield in said ventilating space,-the machine may be prevented from overheating and be kept sufficiently cool.

In the accompanying drawing the invention is embodied in a concrete and preferred form, in which changes may be inade without departing from the legitimate and intended scope of the invention as exprwed in the appended claims.

In the said drawings:

Figure 1 is a side elevation of a device embodying the invention showing one side of the machine.

Fig. 2 is a vertical sectional view looking from the other side of the machine.

Similar charactersof reference indicate corresponding parts in the several views.

1 indicates a casing having the exposure opening 2 in the wall 3- in line with the lantern 4. 5 is a fire shield spaced a considerable distance from the wall 3 and provided with'the opening 6 also in line with the lantern. A fire shutter 7 of the usual type, controlled by the centrifugal governor 8 by means that need not be described, is pivotally supported and is adaptedto automatically close the opening 6 when the speed of the machine falls below a certain rate.

9 is an air or ventilating space between the fire shield 5 and the wall 3. Located in this air space is the, radiatin shield 10, preferably spaced about equal y from the shield 5 and the wall 3. This radiating shield 10 is provided with an opening 11 in line with the openings 2 and 6, but has no fire shutter. Both the fire shield 5 and the radiating shield 10 are supported by means of studs 12extending from the wall 3.

The heat from the fire shield and fire shutter is transmitted by conduction or otherwise to the radiating shield, and, by reason of the air space surrounding the same, is

dissipated so that an undue amount of heat is not transmitted to the casing of the ma- I chine.

lVhen the fire shutter is open and the machine is in operation, the radiatingshield will still perform, its function and prevent the overheating of the machine, and this in spite of the fact that a beam of light from the lantern 4 passes through the opening of the same.

What is claimed, is:

1. The combination with the casing of a moving picture machine, of a fire shield spaced a distance from said casin to provide a ventilating space between the shield and the casing, and a radiating shield interposed in said ventilating space, the said shields and easing having openings in alinement for the passage of a beam of light.

2. The combination with the casing of a moving picture machine, of a fire shield spaced a distance from saidcasing to pro- 3. The combination with the casing of a" moving picture machine, of a fire shield ing openings in alinement for the passage of 10 spaced a distance from said casing to proa beam. of light. I

vide a ventilating space between the shield Signed at borough of Brooklyn in the and the casing, and a radiating shield intercounty of Kings and State of New York, posed in said ventilating space, the margins this 30th day of December, A. D. 1915. v

of said radiating shield projecting beyond JAMES A. CAMERON.

the corresponding margins of said fire shield Witnesses:

whereby a relatively large radiating surface JOHN L. C. MAYAR,

is provided, and the shields and easing hav- C. M. ESHELMAN. 

